\begin{tabular}{l*{2}{l|ll}}
            &\multicolumn{1}{c}{NHTS 2009}&\multicolumn{1}{c}{NHTS 2017}\\
\makecell{Single-Vehicle Household \nextline Vehicle Age}&\makecell{1.05*** \nextline (0.37)}&\makecell{0.82*** \nextline (0.21)}\\
\makecell{Multi-Vehicle Household \nextline Vehicle Age}&\makecell{0.70 \nextline (0.46)}&\makecell{1.00*** \nextline (0.19)}\\
\makecell{Multi-Vehicle Households \nextline Vehicle Count}&\makecell{0.09*** \nextline (0.02)}&\makecell{0.13*** \nextline (0.04)}\\
\makecell{Vehicle-Owning Households \nextline New Vehicles Count}&\makecell{-0.010** \nextline (0.005)}&\makecell{-0.005** \nextline (0.003)}\\
\makecell{Vehicle-Owning Households \nextline Maximum Vehicle Age}&\makecell{1.27*** \nextline (0.05)}&\makecell{1.45*** \nextline (0.32)}\\
\makecell{Vehicle-Owning Households \nextline Minimum Self-Reported Annual VMT}&\makecell{-394.47* \nextline (209.75)}&\makecell{-1219.55*** \nextline (352.58)}\\
\makecell{All Households \nextline Vehicle Count}&\makecell{0.10*** \nextline (0.03)}&\makecell{0.16*** \nextline (0.04)}\\
\makecell{Vehicle-Owning Households \nextline Newly-Purchased Vehicle Count}&\makecell{-0.02*** \nextline (0.01)}&\makecell{0.01 \nextline (0.01)}\\
\makecell{All Households \nextline Self-Reported Aggregate Household VMT}&\makecell{415.68 \nextline (684.19)}&\makecell{-152.11 \nextline (491.95)}\\
\makecell{Vehicle-Owning Households \nextline Oldest Vehicle Self-Reported Annual VMT}&\makecell{-461.19 \nextline (293.14)}&\makecell{-1680.72*** \nextline (608.08)}\\
\makecell{All Households \nextline New Vehicles Count}&\makecell{-0.008** \nextline (0.004)}&\makecell{-0.004 \nextline (0.007)}\\
\makecell{All Households \nextline Newly-Purchased Vehicle Count}&\makecell{-0.015** \nextline (0.006)}&\makecell{0.018* \nextline (0.011)}\\
\end{tabular}
